Page 207 - 《精细化工》2021年第5期

第 38 卷第 5 期 精 细 化 工 Vol.38, No.5
202 1 年 5 月 FINE CHEMICALS May 2021

黏合剂
支化型水性聚氨酯胶黏剂的合成及性能

郭 悦 1,2 ，强涛涛 1,2*

（1. 陕西科技大学 轻工科学与工程学院，陕西 西安 710021；2. 陕西科技大学 轻化工程国家级实验教
学示范中心，陕西 西安 710021）

摘要：采用异佛尔酮二异氰酸酯（IPDI）、聚四氢呋喃醚二醇 2000（PTMG2000）为原料，二月桂酸二丁基锡、
1,4-丁二醇和 2,2-二羟甲基丙酸分别为催化剂、小分子扩链剂和亲水单体，制得水性聚氨酯预聚体（PPU）；接
着以丙烯酸甲酯、二乙醇胺和三羟甲基丙烷为原料合成了超支化聚（胺-酯）（HPAE）；最后制备出不同 HPAE
1
含量（以 IPDI 与 PTMG2000 的总质量为基准，下同）的支化型水性聚氨酯（WPU）胶黏剂。采用 FTIR 和 HNMR
对 HPAE 及胶黏剂的结构进行了表征；通过 TGA、多功能材料试验机考察了胶膜的热力学性能和机械性能。结
果表明，HPAE 用量为 IPDI 与 PTMG2000 的总质量的 1.0%时，制备的 WPU2 乳液及胶膜综合性能较好，其乳
液固含量为 33.67%，胶膜吸水率为 11.22%，水接触角为 90.32°；胶膜机械拉伸强度为 10.33 MPa，断裂伸长率
为 533.73%；其粘结性能良好，剥离强度为 4.063 N/mm。
关键词：水性聚氨酯；超支化聚合物；胶黏剂；粘结性能；机械性能
中图分类号：TQ436.5 文献标识码：A 文章编号：1003-5214 (2021) 05-1061-07

Synthesis and properties of branched waterborne polyurethane adhesives

1,2
GUO Yue , QIANG Taotao 1,2*
（1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an
710021, Shaanxi, China; 2. National Demonstration Center for Experimental Light Chemistry Engineering Education,
Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China）

Abstract: Waterborne polyurethane prepolymer (PPU) was prepared by using isophorone diisocyanate
(IPDI) and polytetrahydrofuran ether glycol 2000 (PTMG2000) as main raw materials, dibutyltin dilaurate,
1,4-butanediol and 2,2-dihydroxymethyl-propionic acid as catalyst, small molecule chain extender and
hydrophilic monomer, respectively. Then hyperbranched poly(amine-ester) (HPAE) was synthesized from
methyl acrylate, diethanolamine and trimethylolpropane. Finally, branched waterborne polyurethane (WPU)
adhesives with different HPAE2000 contents (based on the total mass of IPDI and PTMG2000, the same
1
below) were prepared. FTIR and HNMR spectroscopies were used to characterize the structure of HPAE
and WPU adhesives. TGA and multifunctional material testing machine were used to investigate the
thermodynamic and mechanical properties of the films. The results showed that when the dosage of HPAE
was 1.0% of the total mass of IPDI and PTMG2000, the comprehensive performance of the prepared WPU2
emulsion and film was better. The solid content of the emulsion was 33.67%, the water absorption rate and
water contact angle of the film were 11.22% and 90.32°. The tensile strength and elongation at break were
10.33 MPa and 533.73%, and it had good bonding properties with a peel strength of 4.063 N/mm.
Key words: waterborne polyurethane; hyperbranched polymers; adhesive; bonding properties; mechanical
properties

随着人们对环保越来越多的关注，传统的溶剂 型聚氨酯胶黏剂渐渐淡出市场，取代其的是无毒、

收稿日期：2020-10-12; 定用日期：2020-11-25; DOI: 10.13550/j.jxhg.20200930
基金项目：陕西省重点科技创新团队（2020TD-009）；陕西高校青年创新团队
作者简介：郭 悦（1996—），女，硕士生，E-mail：2859838451@qq.com。联系人：强涛涛（1980—），男，教授，E-mail：qiangtt515@
163.com。